Blue Bloods writer Robin Green has suggested that the new cop drama is the opposite of The Sopranos.

Green previously served as writer and executive producer on the HBO gangster drama and told TV Guide that she was "looking to get on the other side".

"[It's] not that these characters don't have flaws," she explained. "But they are basically strong, good... people who are trying to do the right thing and make an honourable world. Frank Reagan (Tom Selleck) is keeping his city safe and that's what his children are doing, and that's what his father did."

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While later episodes will imply that Frank is somehow involved with the mysterious death of his son Joe, producer Leonard Goldberg insisted that the show's cop characters are not corrupt.

"You should be very trusting of them," he said. "In fact, we hope when you've seen a show or two you'll wish that Frank Reagan was the head of the police in your town. You'd be very safe at night."

He added: "They're human beings [and] they have flaws, and we'll be exploring that. But essentially they are the good guys."